Answer: E. All of the above are supported by UNIX inodes
Explanation:
An inode refers to the data structure that's in the UNIX operating systems which consists of vital information that has to do with the files that's within a file system.
It should be niteec that when there's creation of a file system in UNIX, then a set amount of inodes will be created too.
The levels of indexing that the UNIX inodes were designed to support include the direct, single indirect, double indirect and the triple indirect. Therefore, the correct option is E.